Waymo interview questions

Car Rental Optimization

Given N cars and a list of rental requests (each with pickup time, return time, and ID), assign cars to requests using the minimum number…

Companies: Waymo, Amazon, Google

Last reported Jul 2026

Design a simulation-based regression detection system for code changes

Design a system that runs automated test simulations to validate code changes, collecting and analyzing emitted metrics (e.g., proximity alerts in a simulated environment) to…

Companies: Waymo

Last reported Jun 2026

Tell me about a time you worked on a complex cross-functional project and had to leverage your relationships to ensure its success

Companies: Waymo, CrowdStrike, Meta, Monzo +3

Last reported May 2026

Design a data ingestion system

Design a system that ingests high-frequency drone test data (sensor readings at 1-20Hz, video) and enables other teams to query and analyze the collected data.

Companies: Waymo, Anduril, Qualtrics, Snowflake

Last reported Apr 2026

Discuss a time when you had conflicting perspectives with teammates and how you handled it

Companies: Waymo, Amazon, Anthropic, Canva +10

Last reported Apr 2026

Next Greater Element II

Given a circular integer array, for each element find the first greater value encountered when traversing right (wrapping around the array circularly), or return -1…

Companies: Waymo

Last reported Apr 2026

Tell me about a time when your team's goals were out of alignment with another team you relied on in order to meet your goal.

Companies: Waymo, Amazon, Meta

Last reported Apr 2026

Tell me about a time you had a conflict with a coworker. How did you resolve it?

Companies: Waymo, Adyen, Airbnb, Amazon +31

Last reported Apr 2026

Design a Drop-off Spot Selector

Companies: Waymo

ML System Design

Last reported Mar 2026

Merge Two Sorted Lists

Companies: Waymo, Adobe, Google, LinkedIn +2

Linked List · Recursion

Last reported Jan 2026

Design Large-Scale Inference Serving

Companies: Waymo

ML System Design

Last reported Nov 2025

Compare two rare-event detection models statistically

Companies: Waymo

Hypothesis Testing · Model Evaluation

Design an Online Experiment

Companies: Waymo

Experiment Design (A/B Testing) · Metrics & KPIs

How predict vehicles’ turn direction at intersection?

Companies: Waymo

Model Evaluation · Supervised Learning

Implement K-means and handle train-inference mismatch

Companies: Waymo

ML Coding · Unsupervised Learning

Implement Softmax Cross-Entropy Forward and Backward Passes and a Training Loop

Companies: Waymo

ML Coding · Neural Networks & Training

Logger Rate Limiter

Implement a logger that decides whether to print a message at a given timestamp: return true if the message hasn't been printed in the last…

Companies: Waymo, Amazon, Bloomberg, Google +3

Data Stream · Design · Hash Table

Maximum Gap

Given an integer array, find the maximum difference between successive elements in its sorted order; if fewer than two elements return 0. The catch is…

Companies: Waymo

Array · Bucket Sort · Pigeonhole Principle · Radix Sort

Minimum Number of Refueling Stops

Given a target distance, initial fuel, and stations at positions with fuel amounts, determine the minimum number of refueling stops needed to reach the target…

Companies: Waymo, D. E. Shaw, Uber

Array · Dynamic Programming · Greedy · Heap (Priority Queue)

Number of Islands

Count the number of islands (4-directionally connected components of '1's) in an m×n binary grid. This is a connected-components/flood-fill problem typically solved with…

Companies: Waymo, Amazon, Anduril, Apple +16

Array · Breadth-First Search · Depth-First Search · Matrix

Random Pick with Weight

Given an array of positive weights, implement pickIndex() to return index i with probability w[i]/sum(w); the typical approach preprocessing prefix sums and using a random…

Companies: Waymo, Amazon, Apple, Goldman Sachs +4

Array · Binary Search · Math · Prefix Sum

Robot Room Cleaner

Control a robot with only move/turn/clean APIs to traverse and clean every reachable cell in an unknown grid with obstacles and no global map. The…

Companies: Waymo, Google, LinkedIn, Meta

Backtracking · Interactive